📄 PDF Tools

Free Online PDF Tools — Merge, Split, Compress, Convert and Protect PDF Files

PDF is the universal format for finished, shareable documents — it locks layout and fonts so your contract, invoice, report or proposal looks identical on every device. But working with PDFs once they're created has always been frustrating without expensive software. Our collection of 15 free PDF tools covers every common task: combining multiple PDFs into one, splitting a large document into sections, shrinking oversized files, converting to and from Word and Excel, adding password protection, and more — all without installing anything.

All tools run in your browser. Your documents — contracts, financial statements, medical records, legal filings — are never uploaded to a server. Everything is processed locally using JavaScript, meaning you get the privacy of desktop software with the convenience of a web-based tool.

Merging PDFs: The Most Common Document Task Most People Do Manually

Combining multiple PDFs into one document comes up constantly across almost every profession and life situation: assembling a complete job application from separate CV, cover letter and references files; combining scanned receipts for expense reporting; merging multiple contract sections and exhibits into one signing-ready document; building a property pack from individual surveys, title documents and floor plans. Most people currently handle this by printing everything and re-scanning — which is slow, introduces scanning noise, and loses the text-searchability of the original digital files.

Our PDF Merger handles this in under a minute: upload your files, drag to set the page order, click merge. The output is a single PDF with every page from every source file, in the exact sequence you specified. For a complete walkthrough of merging, splitting and the edge cases that come up in real use, see our PDF merge and split guide.

Compressing PDFs: Why Scanned Documents Are So Large

A digitally-created PDF (exported from Word, generated by accounting software) is typically small because it stores text as text — efficient data. A scanned PDF stores each page as a full-resolution photograph, which is why a 20-page scanned contract can easily be 40–80 MB while the same document created digitally would be under 500 KB. Most email providers cap attachments at 25 MB, making oversized scanned PDFs a regular practical problem.

Our PDF Compressor targets the embedded images specifically — recompressing them at a lower resolution and quality setting while leaving the text layer untouched. A typical 40 MB scanned document comes down to 4–8 MB, which is well within email attachment limits and downloads significantly faster when shared via link.

PDF to Word: When You Need to Edit a Document You Only Have as PDF

The most common cause of this problem: the original source file (the Word document the PDF was exported from) no longer exists or can't be located, and you need to make changes to the content. Converting the PDF back to Word is faster than re-typing the content and produces a usable editable document in most cases. Simple single-column documents convert very reliably. Complex multi-column layouts or tables may need minor manual cleanup after conversion — always proofread a converted document before treating it as final.

The reverse — converting Word to PDF — is significantly more reliable since you're going from structured editable content to a fixed layout, rather than trying to reconstruct structure from a fixed layout. For finished documents (contracts, invoices, reports, proposals) that need to look identical on every device and be protected against accidental editing, always convert to PDF at the point of final distribution and keep the Word source file for future revisions. Our PDF and Word conversion guide covers both directions in depth.

PDF Security: Password Protection and Unlocking

Sharing sensitive documents over email without any protection leaves them readable by anyone who intercepts or forwards them. Our PDF Protect tool adds password encryption so only the intended recipient can open the document — good practice for financial statements, signed contracts, or any document containing personal information sent via email rather than a secure file-sharing link.

If you've received a password-protected PDF and legitimately own the document but need to merge it with others or process it further, our PDF Unlock tool removes the protection after you provide the correct password. And if a merged document contains pages that were scanned in different orientations, our PDF Rotator lets you correct individual pages without re-scanning anything.

Real-World PDF Workflows by Profession

Frequently Asked Questions

📰 PDF Guides From the Blog

The Complete PDF Tool Collection

All 15 PDF tools available on Toolzey, with guidance on when each one is the right choice for your task:

Why "Free Online PDF Tools" Almost Always Means Paywalled

Most of the well-known online PDF tools operate on a freemium model where the first task is free — then you hit a paywall, a file size limit, or a daily usage cap that requires you to create an account to continue. This model works commercially, but it means users searching for a genuinely free PDF tool are regularly met with deceptive "free" labels that turn into subscription upsells at the moment of download.

Toolzey's PDF tools are free because the processing happens in your browser — there's no server infrastructure cost to cover for each file processed, which removes the economic pressure to convert free users into paid subscribers. The trade-off is that very large files (several hundred MB) may process more slowly than a server-based tool would, depending on your device's processing power. For the vast majority of everyday PDF tasks — files under 100 MB — the browser-based approach is fast enough to make server-based processing unnecessary.

PDF Tools and AdSense: What You Need to Know

If you're applying for Google AdSense for your own website, PDF tools are directly relevant to your application in one specific way: AdSense requires a privacy policy, and many small website owners first need to generate that policy document before they can complete their AdSense application. If you need to turn a privacy policy into a shareable PDF for your records or for a client, our Word to PDF converter handles that conversion, while our Privacy Policy Generator in the Utility Tools category creates the policy itself with AdSense-specific disclosure language already included.

Understanding PDF Standards: What Version and Format Mean for Compatibility

PDF has gone through multiple major versions since its creation by Adobe in 1993, and different software produces different PDF variants with different compatibility implications. PDF 1.4–1.7 are the versions most widely supported across all software — virtually everything from 2005 onwards reads these reliably. PDF 2.0 (released 2017) introduced new features but is still not universally supported by older enterprise software, which matters in legal and government contexts where the receiving system may be outdated.

For most everyday use — business documents, invoices, reports, applications — standard PDF created by any modern office software or PDF generator is universally readable. The edge cases where version matters are specialised: PDF/A for long-term archiving (a specific subset with no audio, video or encryption), PDF/X for print production, and PDF/UA for accessibility compliance. For the vast majority of documents Toolzey users create and process, standard PDF is the correct choice and the only one worth thinking about.

PDF Metadata: What Your Documents Reveal About You

A PDF file contains more information than just its visible content. Embedded metadata typically includes the document title, author name, the software used to create it, the date and time of creation and modification, and sometimes the operating system and computer username of the creator. For personal or internal documents this rarely matters. But for documents shared publicly or with clients — especially when the "author" field contains a personal name, internal nickname, or draft file path that reveals information you didn't intend to share — metadata is worth thinking about.

Our PDF Metadata tool lets you view and edit the metadata fields embedded in a PDF before sharing it — removing or correcting author information, revision history, and other fields that might be more revealing than intended.

PDF vs Word vs Google Docs: Choosing the Right Format for Each Stage

The right format depends on where a document is in its lifecycle. During drafting and revision, Word or Google Docs is the right choice — real-time collaboration, tracked changes, comments, and easy editing are all native to these formats and painful to replicate in PDF. At the point of finalisation and distribution, PDF is correct — layout locks, fonts embed, and the document looks identical on any device without any editing by the recipient. The mistake most people make is using PDF too early (making it hard to revise) or using Word/Docs too late (sending an editable document when a locked one was intended).

A practical workflow for important documents: draft and revise in Word or Google Docs, convert to PDF only when the content is finalised and approved, and keep the source file at every stage so future edits start from the editable version rather than requiring another PDF-to-Word conversion. This is the approach used by legal teams, consulting firms and agencies that handle high volumes of client documents — and it applies equally to a freelancer sending proposals or a small business sending quotes.